Normal sudoku rules apply. Digits along an arrow must sum to the digit in that arrow’s circle. Shade some cells so that all shaded cells form one orthogonally connected area. Arrow circles are the clues for a “Canal View” puzzle. Ie These clues cannot be shaded, and represent the number of shaded cells connected in a straight line horizontally or vertically to the clue. No 2x2 region may be entirely shaded. Additionally, digits cannot repeat within unshaded regions.